That which is not measurable is not science. That which is not physics is stamp collecting.

The greatest contributor to the feeling of tension and fear of war arose from the power of the bombing aeroplane. If all nations would consent to abolish air bombardment . . . that would mean the greatest possible release from fear.

Now I know what the atom looks like.

I congratulate you both on a fine piece of work which I am sure will ultimately prove of importance. I am personally very much interested in your results... In the past I have tried a number of experiments... but without any success.

Gentlemen, now you will see that now you see nothing. And why you see nothing you will see presently.

When we have found how the nucleus of atoms is built up we shall have found the greatest secret of all — except life. We shall have found the basis of everything — of the earth we walk on, of the air we breathe, of the sunshine, of our physical body itself, of everything in the world, however great or however small — except life.

It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.